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<div class="title">server_base.hpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * server_base.hpp</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * web server fream</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * create by chenlin</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * email:chenlin2844@hotmail.com</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#ifndef SERVER_BASE_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define SERVER_BASE_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;boost/asio.hpp&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;regex&gt;</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;unordered_map&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;thread&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacewebX.html">webX</a> {</div><div class="line"><a name="l00018"></a><span class="lineno"><a class="line" href="structwebX_1_1Request.html">   18</a></span>&#160;    <span class="keyword">struct </span><a class="code" href="structwebX_1_1Request.html">Request</a> {</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;        <span class="comment">// 请求方法, POST, GET; 请求路径; HTTP 版本</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;        std::string method, path, http_version;</div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;        <span class="comment">// 对 content 使用智能指针进行引用计数</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;        std::shared_ptr&lt;std::istream&gt; content;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;        <span class="comment">// 哈希容器, key-value 字典</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;        std::unordered_map&lt;std::string, std::string&gt; header;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;        <span class="comment">// 用正则表达式处理路径匹配</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;        std::smatch path_match;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;    };</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="comment">// 使用 typedef 简化资源类型的表示方式</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keyword">typedef</span> std::map&lt;std::string, std::unordered_map&lt;std::string,</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    std::function&lt;void(std::ostream&amp;, Request&amp;)&gt;&gt;&gt; resource_type;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    <span class="comment">// socket_type 为 HTTP or HTTPS</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> socket_type&gt;</div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="classwebX_1_1ServerBase.html">   35</a></span>&#160;    <span class="keyword">class </span><a class="code" href="classwebX_1_1ServerBase.html">ServerBase</a> {</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;        resource_type resource;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        resource_type default_resource;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;        <span class="comment">// 构造服务器, 初始化端口, 默认使用一个线程</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        <a class="code" href="classwebX_1_1ServerBase.html">ServerBase</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> port, <span class="keywordtype">size_t</span> num_threads = 1) :</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;            endpoint(boost::asio::ip::tcp::v4(), port),</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;            acceptor(m_io_service, endpoint),</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;            num_threads(num_threads) {}</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;        <span class="keywordtype">void</span> start() {</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;            <span class="comment">// 默认资源放在 vector 的末尾, 用作应答方法</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;            <span class="keywordflow">for</span>(<span class="keyword">auto</span> it = resource.begin(); it != resource.end(); it++) {</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;                all_resources.push_back(it);</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;            }</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;            <span class="keywordflow">for</span>(<span class="keyword">auto</span> it = default_resource.begin(); it != default_resource.end(); it++) {</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;                all_resources.push_back(it);</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;            }</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;            <span class="comment">// 调用 socket 的连接方式</span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;            accept();</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;            <span class="comment">// 如果 num_threads&gt;1, 那么 m_io_service.run()</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;            <span class="comment">// 将运行 (num_threads-1) 线程成为线程池</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> c = 1;c &lt; num_threads; c++) {</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;                threads.emplace_back([<span class="keyword">this</span>](){</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;                    m_io_service.run();</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;                });</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;            }</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            <span class="comment">// 主线程</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;            m_io_service.run();</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;            <span class="comment">// 等待其他线程，如果有的话, 就等待这些线程的结束</span></div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            <span class="keywordflow">for</span>(<span class="keyword">auto</span>&amp; t: threads)</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;                t.join();</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        }</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="comment">// asio 库中的 io_service 是调度器，所有的异步 IO 事件都要通过它来分发处理</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        <span class="comment">// 换句话说, 需要 IO 的对象的构造函数，都需要传入一个 io_service 对象</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        boost::asio::io_service m_io_service;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="comment">// IP 地址、端口号、协议版本构成一个 endpoint，并通过这个 endpoint 在服务端生成</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="comment">// tcp::acceptor 对象，并在指定端口上等待连接</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        boost::asio::ip::tcp::endpoint endpoint;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        <span class="comment">// 所以，一个 acceptor 对象的构造都需要 io_service 和 endpoint 两个参数</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        boost::asio::ip::tcp::acceptor acceptor;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <span class="comment">// 服务器线程</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        <span class="keywordtype">size_t</span> num_threads;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        std::vector&lt;std::thread&gt; threads;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        <span class="comment">// 所有的资源及默认资源都会在 vector 尾部添加, 并在 start() 中创建</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        std::vector&lt;resource_type::iterator&gt; all_resources;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <span class="comment">// 需要不同类型的服务器实现这个方法</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> accept() {}</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <span class="comment">// 处理请求和应答</span></div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="keywordtype">void</span> process_request_and_respond(std::shared_ptr&lt;socket_type&gt; socket)<span class="keyword"> const </span>{</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;            <span class="comment">// 为 async_read_until() 创建新的读缓存</span></div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;            <span class="comment">// Shared_ptr 用于传递临时对象给匿名函数</span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;            <span class="comment">// 会被推导为 std::shared_ptr&lt;boost::asio::streambuf&gt;</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;            <span class="keyword">auto</span> read_buffer = std::make_shared&lt;boost::asio::streambuf&gt;();</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            boost::asio::async_read_until(*socket, *read_buffer, <span class="stringliteral">&quot;\r\n\r\n&quot;</span>,</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;            [<span class="keyword">this</span>, socket, read_buffer](<span class="keyword">const</span> boost::system::error_code&amp; ec, <span class="keywordtype">size_t</span> bytes_transferred) {</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                <span class="keywordflow">if</span>(!ec) {</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;                    <span class="comment">// 注意：read_buffer-&gt;size() 的大小并一定和 bytes_transferred 相等， Boost 的文档中指出：</span></div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                    <span class="comment">// 在 async_read_until 操作成功后,  streambuf 在界定符之外可能包含一些额外的的数据</span></div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                    <span class="comment">// 所以较好的做法是直接从流中提取并解析当前 read_buffer 左边的报头, 再拼接 async_read 后面的内容</span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;                    <span class="keywordtype">size_t</span> total = read_buffer-&gt;size();<span class="comment">//获得原始指针</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;                    <span class="comment">// 转换到 istream 来提取 string-lines</span></div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;                    std::istream stream(read_buffer.get());</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;                    <span class="comment">// 被推导为 std::shared_ptr&lt;Request&gt; 类型</span></div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;                    <span class="keyword">auto</span> request = std::make_shared&lt;Request&gt;();</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;                    *request = parse_request(stream);</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                    <span class="keywordtype">size_t</span> num_additional_bytes = total-bytes_transferred;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;                    <span class="comment">// 如果满足，同样读取</span></div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                    <span class="keywordflow">if</span>(request-&gt;header.count(<span class="stringliteral">&quot;Content-Length&quot;</span>)&gt;0) {</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                        boost::asio::async_read(*socket, *read_buffer,</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                          boost::asio::transfer_exactly(stoull(request-&gt;header[<span class="stringliteral">&quot;Content-Length&quot;</span>]) - num_additional_bytes),</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                        [<span class="keyword">this</span>, socket, read_buffer, request](<span class="keyword">const</span> boost::system::error_code&amp; ec, <span class="keywordtype">size_t</span> bytes_transferred) {</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;                            if(!ec) {</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;                                <span class="comment">// 将指针作为 istream 对象存储到 read_buffer 中</span></div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;                                request-&gt;content = std::shared_ptr&lt;std::istream&gt;(new std::istream(read_buffer.get()));</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;                                respond(socket, request);</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;                            }</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;                        });</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;                    } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;                        respond(socket, request);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                    }</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                }</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;            });</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        }</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        <span class="comment">// 解析请求</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        <a class="code" href="structwebX_1_1Request.html">Request</a> parse_request(std::istream&amp; stream)<span class="keyword"> const </span>{</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            <a class="code" href="structwebX_1_1Request.html">Request</a> request;</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            std::regex e(<span class="stringliteral">&quot;^([^ ]*) ([^ ]*) HTTP/([^ ]*)$&quot;</span>);<span class="comment">//[^ ]除了空格外的其他任意字符</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;            std::smatch sub_match;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;            <span class="comment">//从第一行中解析请求方法、路径和 HTTP 版本</span></div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;            std::string line;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;            getline(stream, line);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;            line.pop_back();</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            <span class="keywordflow">if</span>(std::regex_match(line, sub_match, e)) {</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;                request.method       = sub_match[1];</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                request.path         = sub_match[2];</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;                request.http_version = sub_match[3];</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                <span class="keywordtype">bool</span> matched;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                e=<span class="stringliteral">&quot;^([^:]*): ?(.*)$&quot;</span>;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;                <span class="comment">// 解析头部的其他信息</span></div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;                <span class="keywordflow">do</span> {</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                    getline(stream, line);</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                    line.pop_back();</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;                    matched=std::regex_match(line, sub_match, e);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;                    <span class="keywordflow">if</span>(matched) {</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;                        request.header[sub_match[1]] = sub_match[2];</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;                    }</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;                } <span class="keywordflow">while</span>(matched==<span class="keyword">true</span>);</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            }</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;            <span class="keywordflow">return</span> request;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        }</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;        <span class="comment">// 应答</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        <span class="keywordtype">void</span> respond(std::shared_ptr&lt;socket_type&gt; socket, std::shared_ptr&lt;Request&gt; request)<span class="keyword"> const </span>{</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;            <span class="comment">// 对请求路径和方法进行匹配查找，并生成响应</span></div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;            <span class="keywordflow">for</span>(<span class="keyword">auto</span> res_it: all_resources) {</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;                std::regex e(res_it-&gt;first);</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                std::smatch sm_res;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                <span class="keywordflow">if</span>(std::regex_match(request-&gt;path, sm_res, e)) {</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                    <span class="keywordflow">if</span>(res_it-&gt;second.count(request-&gt;method)&gt;0) {</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                        request-&gt;path_match = move(sm_res);</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                        <span class="comment">// 会被推导为 std::shared_ptr&lt;boost::asio::streambuf&gt;</span></div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                        <span class="keyword">auto</span> write_buffer = std::make_shared&lt;boost::asio::streambuf&gt;();</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                        std::ostream response(write_buffer.get());</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                        res_it-&gt;second[request-&gt;method](response, *request);</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                        <span class="comment">// 在 lambda 中捕获 write_buffer 使其不会再 async_write 完成前被销毁</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                        boost::asio::async_write(*socket, *write_buffer,</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                        [<span class="keyword">this</span>, socket, request, write_buffer](<span class="keyword">const</span> boost::system::error_code&amp; ec, <span class="keywordtype">size_t</span> bytes_transferred) {</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                            <span class="comment">//HTTP 持久连接(HTTP 1.1):</span></div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                            <span class="keywordflow">if</span>(!ec &amp;&amp; stof(request-&gt;http_version)&gt;1.05)</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                                process_request_and_respond(socket);</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;                        });</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;                        <span class="keywordflow">return</span>;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;                    }</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                }</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;            }</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        }</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    };</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keyword">template</span>&lt;<span class="keyword">typename</span> socket_type&gt;</div><div class="line"><a name="l00199"></a><span class="lineno"><a class="line" href="classwebX_1_1Server.html">  199</a></span>&#160;    <span class="keyword">class </span><a class="code" href="classwebX_1_1Server.html">Server</a> : <span class="keyword">public</span> <a class="code" href="classwebX_1_1ServerBase.html">ServerBase</a>&lt;socket_type&gt; {};</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;}</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="preprocessor">#endif  </span><span class="comment">/* SERVER_BASE_HPP */</span><span class="preprocessor"></span></div><div class="ttc" id="structwebX_1_1Request_html"><div class="ttname"><a href="structwebX_1_1Request.html">webX::Request</a></div><div class="ttdef"><b>Definition:</b> server_base.hpp:18</div></div>
<div class="ttc" id="namespacewebX_html"><div class="ttname"><a href="namespacewebX.html">webX</a></div><div class="ttdef"><b>Definition:</b> server_base.hpp:17</div></div>
<div class="ttc" id="classwebX_1_1Server_html"><div class="ttname"><a href="classwebX_1_1Server.html">webX::Server</a></div><div class="ttdef"><b>Definition:</b> server_base.hpp:199</div></div>
<div class="ttc" id="classwebX_1_1ServerBase_html"><div class="ttname"><a href="classwebX_1_1ServerBase.html">webX::ServerBase</a></div><div class="ttdef"><b>Definition:</b> server_base.hpp:35</div></div>
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